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-rw-r--r--xpcom/base/nsDebug.h330
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diff --git a/xpcom/base/nsDebug.h b/xpcom/base/nsDebug.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsDebug_h___
+#define nsDebug_h___
+
+#include "nscore.h"
+#include "nsError.h"
+
+#include "nsXPCOM.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/glue/Debug.h"
+#include "mozilla/DbgMacro.h"
+#include "mozilla/Likely.h"
+#include <stdarg.h>
+
+#ifdef DEBUG
+# include "mozilla/ErrorNames.h"
+# include "mozilla/IntegerPrintfMacros.h"
+# include "mozilla/Printf.h"
+#endif
+
+/**
+ * Warn if the given condition is true. The condition is evaluated in both
+ * release and debug builds, and the result is an expression which can be
+ * used in subsequent expressions, such as:
+ *
+ * if (NS_WARN_IF(NS_FAILED(rv)) {
+ * return rv;
+ * }
+ *
+ * This explicit warning and return is preferred to the NS_ENSURE_* macros
+ * which hide the warning and the return control flow.
+ *
+ * This macro can also be used outside of conditions just to issue a warning,
+ * like so:
+ *
+ * Unused << NS_WARN_IF(NS_FAILED(FnWithSideEffects());
+ *
+ * (The |Unused <<| is necessary because of the [[nodiscard]] annotation.)
+ *
+ * However, note that the argument to this macro is evaluated in all builds. If
+ * you just want a warning assertion, it is better to use NS_WARNING_ASSERTION
+ * (which evaluates the condition only in debug builds) like so:
+ *
+ * NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "operation failed");
+ *
+ * @note This is C++-only
+ */
+#ifdef __cplusplus
+# ifdef DEBUG
+[[nodiscard]] inline bool NS_warn_if_impl(bool aCondition, const char* aExpr,
+ const char* aFile, int32_t aLine) {
+ if (MOZ_UNLIKELY(aCondition)) {
+ NS_DebugBreak(NS_DEBUG_WARNING, nullptr, aExpr, aFile, aLine);
+ }
+ return aCondition;
+}
+# define NS_WARN_IF(condition) \
+ NS_warn_if_impl(condition, #condition, __FILE__, __LINE__)
+# else
+# define NS_WARN_IF(condition) (bool)(condition)
+# endif
+#endif
+
+/**
+ * Test an assertion for truth. If the expression is not true then
+ * emit a warning.
+ *
+ * Program execution continues past the usage of this macro.
+ *
+ * Note also that the non-debug version of this macro does <b>not</b>
+ * evaluate the message argument.
+ */
+#ifdef DEBUG
+# define NS_WARNING_ASSERTION(_expr, _msg) \
+ do { \
+ if (!(_expr)) { \
+ NS_DebugBreak(NS_DEBUG_WARNING, _msg, #_expr, __FILE__, __LINE__); \
+ } \
+ } while (false)
+#else
+# define NS_WARNING_ASSERTION(_expr, _msg) \
+ do { /* nothing */ \
+ } while (false)
+#endif
+
+/**
+ * Test an assertion for truth. If the expression is not true then
+ * trigger a program failure.
+ *
+ * Note that the non-debug version of this macro does <b>not</b>
+ * evaluate the message argument.
+ */
+#ifdef DEBUG
+inline void MOZ_PretendNoReturn() MOZ_PRETEND_NORETURN_FOR_STATIC_ANALYSIS {}
+# define NS_ASSERTION(expr, str) \
+ do { \
+ if (!(expr)) { \
+ NS_DebugBreak(NS_DEBUG_ASSERTION, str, #expr, __FILE__, __LINE__); \
+ MOZ_PretendNoReturn(); \
+ } \
+ } while (0)
+#else
+# define NS_ASSERTION(expr, str) \
+ do { /* nothing */ \
+ } while (0)
+#endif
+
+/**
+ * Log an error message.
+ */
+#ifdef DEBUG
+# define NS_ERROR(str) \
+ do { \
+ NS_DebugBreak(NS_DEBUG_ASSERTION, str, "Error", __FILE__, __LINE__); \
+ MOZ_PretendNoReturn(); \
+ } while (0)
+#else
+# define NS_ERROR(str) \
+ do { /* nothing */ \
+ } while (0)
+#endif
+
+/**
+ * Log a warning message.
+ */
+#ifdef DEBUG
+# define NS_WARNING(str) \
+ NS_DebugBreak(NS_DEBUG_WARNING, str, nullptr, __FILE__, __LINE__)
+#else
+# define NS_WARNING(str) \
+ do { /* nothing */ \
+ } while (0)
+#endif
+
+/**
+ * Trigger a debugger breakpoint, only in debug builds.
+ */
+#ifdef DEBUG
+# define NS_BREAK() \
+ do { \
+ NS_DebugBreak(NS_DEBUG_BREAK, nullptr, nullptr, __FILE__, __LINE__); \
+ MOZ_PretendNoReturn(); \
+ } while (0)
+#else
+# define NS_BREAK() \
+ do { /* nothing */ \
+ } while (0)
+#endif
+
+/******************************************************************************
+** Macros for static assertions. These are used by the sixgill tool.
+** When the tool is not running these macros are no-ops.
+******************************************************************************/
+
+/* Avoid name collision if included with other headers defining annotations. */
+#ifndef HAVE_STATIC_ANNOTATIONS
+# define HAVE_STATIC_ANNOTATIONS
+
+# ifdef XGILL_PLUGIN
+
+# define STATIC_PRECONDITION(COND) __attribute__((precondition(#COND)))
+# define STATIC_PRECONDITION_ASSUME(COND) \
+ __attribute__((precondition_assume(#COND)))
+# define STATIC_POSTCONDITION(COND) __attribute__((postcondition(#COND)))
+# define STATIC_POSTCONDITION_ASSUME(COND) \
+ __attribute__((postcondition_assume(#COND)))
+# define STATIC_INVARIANT(COND) __attribute__((invariant(#COND)))
+# define STATIC_INVARIANT_ASSUME(COND) \
+ __attribute__((invariant_assume(#COND)))
+
+/* Used to make identifiers for assert/assume annotations in a function. */
+# define STATIC_PASTE2(X, Y) X##Y
+# define STATIC_PASTE1(X, Y) STATIC_PASTE2(X, Y)
+
+# define STATIC_ASSUME(COND) \
+ do { \
+ __attribute__((assume_static(#COND), unused)) int STATIC_PASTE1( \
+ assume_static_, __COUNTER__); \
+ } while (false)
+
+# define STATIC_ASSERT_RUNTIME(COND) \
+ do { \
+ __attribute__((assert_static_runtime(#COND), \
+ unused)) int STATIC_PASTE1(assert_static_runtime_, \
+ __COUNTER__); \
+ } while (false)
+
+# else /* XGILL_PLUGIN */
+
+# define STATIC_PRECONDITION(COND) /* nothing */
+# define STATIC_PRECONDITION_ASSUME(COND) /* nothing */
+# define STATIC_POSTCONDITION(COND) /* nothing */
+# define STATIC_POSTCONDITION_ASSUME(COND) /* nothing */
+# define STATIC_INVARIANT(COND) /* nothing */
+# define STATIC_INVARIANT_ASSUME(COND) /* nothing */
+
+# define STATIC_ASSUME(COND) \
+ do { /* nothing */ \
+ } while (false)
+# define STATIC_ASSERT_RUNTIME(COND) \
+ do { /* nothing */ \
+ } while (false)
+
+# endif /* XGILL_PLUGIN */
+
+# define STATIC_SKIP_INFERENCE STATIC_INVARIANT(skip_inference())
+
+#endif /* HAVE_STATIC_ANNOTATIONS */
+
+/******************************************************************************
+** Macros for terminating execution when an unrecoverable condition is
+** reached. These need to be compiled regardless of the DEBUG flag.
+******************************************************************************/
+
+/* Macros for checking the trueness of an expression passed in within an
+ * interface implementation. These need to be compiled regardless of the
+ * DEBUG flag. New code should use NS_WARN_IF(condition) instead!
+ * @status deprecated
+ */
+
+#define NS_ENSURE_TRUE(x, ret) \
+ do { \
+ if (MOZ_UNLIKELY(!(x))) { \
+ NS_WARNING("NS_ENSURE_TRUE(" #x ") failed"); \
+ return ret; \
+ } \
+ } while (false)
+
+#define NS_ENSURE_FALSE(x, ret) NS_ENSURE_TRUE(!(x), ret)
+
+#define NS_ENSURE_TRUE_VOID(x) \
+ do { \
+ if (MOZ_UNLIKELY(!(x))) { \
+ NS_WARNING("NS_ENSURE_TRUE(" #x ") failed"); \
+ return; \
+ } \
+ } while (false)
+
+#define NS_ENSURE_FALSE_VOID(x) NS_ENSURE_TRUE_VOID(!(x))
+
+/******************************************************************************
+** Macros for checking results
+******************************************************************************/
+
+#if defined(DEBUG) && !defined(XPCOM_GLUE_AVOID_NSPR)
+
+# define NS_ENSURE_SUCCESS_BODY(res, ret) \
+ const char* name = mozilla::GetStaticErrorName(__rv); \
+ mozilla::SmprintfPointer msg = mozilla::Smprintf( \
+ "NS_ENSURE_SUCCESS(%s, %s) failed with " \
+ "result 0x%" PRIX32 "%s%s%s", \
+ #res, #ret, static_cast<uint32_t>(__rv), name ? " (" : "", \
+ name ? name : "", name ? ")" : ""); \
+ NS_WARNING(msg.get());
+
+# define NS_ENSURE_SUCCESS_BODY_VOID(res) \
+ const char* name = mozilla::GetStaticErrorName(__rv); \
+ mozilla::SmprintfPointer msg = mozilla::Smprintf( \
+ "NS_ENSURE_SUCCESS_VOID(%s) failed with " \
+ "result 0x%" PRIX32 "%s%s%s", \
+ #res, static_cast<uint32_t>(__rv), name ? " (" : "", name ? name : "", \
+ name ? ")" : ""); \
+ NS_WARNING(msg.get());
+
+#else
+
+# define NS_ENSURE_SUCCESS_BODY(res, ret) \
+ NS_WARNING("NS_ENSURE_SUCCESS(" #res ", " #ret ") failed");
+
+# define NS_ENSURE_SUCCESS_BODY_VOID(res) \
+ NS_WARNING("NS_ENSURE_SUCCESS_VOID(" #res ") failed");
+
+#endif
+
+#define NS_ENSURE_SUCCESS(res, ret) \
+ do { \
+ nsresult __rv = res; /* Don't evaluate |res| more than once */ \
+ if (NS_FAILED(__rv)) { \
+ NS_ENSURE_SUCCESS_BODY(res, ret) \
+ return ret; \
+ } \
+ } while (false)
+
+#define NS_ENSURE_SUCCESS_VOID(res) \
+ do { \
+ nsresult __rv = res; \
+ if (NS_FAILED(__rv)) { \
+ NS_ENSURE_SUCCESS_BODY_VOID(res) \
+ return; \
+ } \
+ } while (false)
+
+/******************************************************************************
+** Macros for checking state and arguments upon entering interface boundaries
+******************************************************************************/
+
+#define NS_ENSURE_ARG(arg) NS_ENSURE_TRUE(arg, NS_ERROR_INVALID_ARG)
+
+#define NS_ENSURE_ARG_POINTER(arg) NS_ENSURE_TRUE(arg, NS_ERROR_INVALID_POINTER)
+
+#define NS_ENSURE_ARG_MIN(arg, min) \
+ NS_ENSURE_TRUE((arg) >= min, NS_ERROR_INVALID_ARG)
+
+#define NS_ENSURE_ARG_MAX(arg, max) \
+ NS_ENSURE_TRUE((arg) <= max, NS_ERROR_INVALID_ARG)
+
+#define NS_ENSURE_ARG_RANGE(arg, min, max) \
+ NS_ENSURE_TRUE(((arg) >= min) && ((arg) <= max), NS_ERROR_INVALID_ARG)
+
+#define NS_ENSURE_STATE(state) NS_ENSURE_TRUE(state, NS_ERROR_UNEXPECTED)
+
+/*****************************************************************************/
+
+#if (defined(DEBUG) || (defined(NIGHTLY_BUILD) && !defined(MOZ_PROFILING))) && \
+ !defined(XPCOM_GLUE_AVOID_NSPR)
+# define MOZ_THREAD_SAFETY_OWNERSHIP_CHECKS_SUPPORTED 1
+#endif
+
+#ifdef MOZILLA_INTERNAL_API
+void NS_ABORT_OOM(size_t aSize);
+#else
+inline void NS_ABORT_OOM(size_t) { MOZ_CRASH(); }
+#endif
+
+#endif /* nsDebug_h___ */